[sdiy] MC6805 ROM readout?

[Jerry Gray-Eskue]

I used a version of this device in one of my product lines way back when.
Motorola supplied a programmer emulator PCB ($500 each at the time) that I
used to program parts. These boards are about a square foot in size, and
specific to certain part numbers. I still have some of these in storage. I
recall that some parts had a code protect fuse, if it is set none of the
regular tools can read the part. One vendor hinted that this was not very
secure but I do not recall the details.

This link may have some info you could use:

http://www.freescale.com/webapp/search/Serp.jsp?SelectedAsset=Documentation&
assetLocked=false&showCustomCollateral=false&Product
Type=Products%2F040M934302706246%60%60Microcontrollers%2F000M938645538449%60
%608-bit+MCUs%2F005M98633%60%60HC05+%28Legacy%29%2F

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Tom Arnold
Sent: Monday, February 28, 2011 8:58 PM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] MC6805 ROM readout?

Anyone have experience with reading out the [MASK/OTP] ROM on a 6805?  I
don't even know if its possible on this chip.  Back in the day I know it was
popular to read out the BASIC ROM in the Intel 8052AH-BASIC and was hoping
maybe someone had done the same with the 6805.

-- 
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 - Tom Arnold       -  Free Synth DIY webspace http://www.sdiy.org 
 - SynthGeek        -
 - BBD Fanatic      -  "...is it a virus, a drug, or a religion?" 
 - echo evho wjxo   -    Juanita Shrugs. "What's the difference?" 
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